/**
 * @author liya
 */


    function choiceProvince(obj) {

            var options = obj.getElementsByTagName("option");
            for (var i = 0; i < options.length; i++) {
		//	alert(options[i].value);
                document.getElementById(options[i].value).style.display = "none";
            }
            document.getElementById(obj.value).style.display = "inline";
        }
        
 